OK not a lot of traction here with this thread.
Perhaps next year a lot more people will have some 'plus' size experience.
I'm waiting to see good deals and what the range of competitive offerings is.
Now that Ibis, Scott, Norco have ones, I think this is getting interesting.
Hope to demo a FS 27.5+ version in the next few months and see how it compares.
Here's the scoop: Plus can change the way you ride trails. More traction and more comfort = taking silly lines that didn't exist before. For wet roots and rocks, you still need sticky tires. Once it dries up, regular tires are more than enough. The caveat is if your speeds exceed a certain level and you ride groomed trails at those speeds, the low PSI will work against you. Think railing a berm or hitting a jump at speed and folding the tire over.
Let's just say that like Fat bikes, 160mm Enduro machines, DH bikes, etc, Plus bikes have their time and place, and most of all type of rider. Plus bikes will outperform most trail bikes for the average user. Unfortunately there are lots of riders out there who will kid themselves and avoid Plus bikes because Jared Graves isn't going to race on one.